干旱区生态环境知识资源中心(Arid): 沙尘天气过程对中国北方城市空气质量的影响

Arid

	沙尘天气过程对中国北方城市空气质量的影响
其他题名	Effect of Dust Process on Air Quality in Cities of Northern China
	陈杰 1; 赵素平 2; 殷代英 2; 屈建军2
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2015
卷号	35 期号:2 页码:423-430
中文摘要	2014年4月2325日中国北方地区经历了一次大范围的强沙尘天气过程。利用13个城市的空气质量和气象数据结合后向轨迹模式和MODIS deep-blue气溶胶光学厚度数据,研究沙尘天气过程对中国北方城市空气质量的影响,特别是对PM_(2.5)质量浓度的贡献。结果表明:来源于塔克拉玛干沙漠及其周边地区的沙尘途经甘肃西北部和内蒙古中西部的沙漠区进而影响下游城市。MODIS deep-blue气溶胶光学厚度的空间分布能够较好地反映出沙尘的水平运动特征。沙尘天气过程可以使中国北方城市PM_(2.5)和PM_(10)质量浓度分别增加7.5%~1 141.2%和344.0%~2 562.1%,可以有效地降低SO_2、NO_2和CO气体污染物的浓度,而对O_3的浓度影响较小。银川、大同和库尔勒沙尘天气过程期间平均SO_2、NO_2和CO浓度较非沙尘天气过程期间降低最明显,分别降低约80.0%、78.7%和62.1%。
英文摘要	In order to investigate effect of dust process on air quality in cities of Northern China,the particulate concentration(PM_(2.5) and PM_(10))and gaseous pollutant concentration(SO_2,NO_2,O_3 and CO)and meteorological data were measured in 13 cities of Northern China during a serious regional dust process occurred on April 23-25,2014.Sources of dust were identified using backward trajectory model and spatial distributions of MODIS deep-blue AOD (Aerosol Optical Depth).The dust particles originated from the Taklimakan Desert and its outer edge,passed through desert areas in northwestern Gansu,western and central Inner Mongolia, and affected downstream cities.The horizontal movement characteristics of dust particles could be seen from spatial distributions of MODIS deep-blue AOD.The PM_(2.5) and PM_(10) mass concentrations increased by 7.5%-1 141.2%and 344.0%-2 562.1%in northern cities of China during the dust process,respectively. In addition,the dust process alleviated gaseous pollutants concentrations effectively such as SO_2,NO_2 and CO,but it had a less effect on O_3 concentration.The decreases of mean concentrations of SO_2,NO_2 and CO were more significant in Yinchuan,Datong and Korla during the dust process than during non-dust event, which were 80.0%, 78.7% and 62.1%lower,respectively.
中文关键词	沙尘 ; 中国北方 ; 空气质量
英文关键词	dust Northern China air quality
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:5372616
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233741
作者单位	1.徽县气象局, 徽县, 甘肃 742300, 中国; 2.中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	陈杰,赵素平,殷代英,等. 沙尘天气过程对中国北方城市空气质量的影响[J]. 中国科学院西北生态环境资源研究院,2015,35(2):423-430.
APA	陈杰,赵素平,殷代英,&屈建军.(2015).沙尘天气过程对中国北方城市空气质量的影响.中国沙漠,35(2),423-430.
MLA	陈杰,et al."沙尘天气过程对中国北方城市空气质量的影响".中国沙漠 35.2(2015):423-430.